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Diodes Incorporated AP7344D-1828RH4-7
- Part No.:
- AP7344D-1828RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7344D-1828RH4-7.pdf
- Description:
- IC REG LIN 1.8V/2.8V X2DFN1612-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,055
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Product details
Overview
AP7344D-1828RH4-7 from Diodes Incorporated is a dual-channel CMOS low-dropout regulator delivering fixed 1.8V and 2.8V outputs, each rated for 300mA continuous current, ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It operates from 1.7V to 5.25V input and features independent enable inputs (EN1/EN2) for power sequencing in compact portable electronics.
For engineers reviewing the AP7344D-1828RH4-7 datasheet, AP7344D-1828RH4-7 pinout, AP7344D-1828RH4-7 application, or AP7344D-1828RH4-7 equivalent, key selection criteria include dual-rail low-noise supply capability, thermal performance in X2-DFN1612-8, channel-specific enable control, and discharge option compatibility with fast load transient response.
Technical Context
The AP7344D-1828RH4-7 integrates two independent LDO regulators on a single CMOS die, each with dedicated error amplifier, voltage reference, current-limit circuit, and NMOS pass transistor. Its architecture supports simultaneous or staggered channel activation via EN1 and EN2, with no cross-regulation between VOUT1 (1.8V) and VOUT2 (2.8V).
Each channel provides built-in short-circuit protection (foldback current limit ~55mA), thermal shutdown, and auto-discharge functionality (enabled by 'D' suffix). The device achieves stable operation with 1.0µF ceramic output capacitors and maintains <0.39V dropout at 300mA for the 2.8V rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 1.8V (Channel 1), 2.8V (Channel 2); fixed internal resistor network eliminates external feedback components. |
| Max Output Current | 300mA per channel; supports simultaneous full-load operation with proper PCB thermal design. |
| Output Accuracy | ±1% at +25°C, ±1.5% over −40°C to +85°C; enables precise biasing of RF ICs and ADC references. |
| PSRR | 75dB at 1kHz; suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuits. |
| Output Noise | 60µVrms (10Hz–100kHz); meets low-noise requirements for camera sensor power and audio codec supplies. |
| Quiescent Current | 100–140µA (both channels enabled, no load); extends battery life in always-on subsystems. |
| Dropout Voltage | 0.26V (2.8V channel @ 300mA); allows operation from single-cell Li-ion (3.0V min) with margin. |
Pinout & Package
The AP7344D-1828RH4-7 is housed in an 8-pin X2-DFN1612-8 package (1.6mm × 1.2mm, 0.4mm pitch) with exposed thermal pad. This ultra-compact footprint supports high-density mobile PCB layouts while enabling efficient heat dissipation when the thermal pad is connected to a GND copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Common ground reference | Dual GND pins reduce ground impedance and improve PSRR; must be tied to low-impedance PCB ground plane. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers fixed 1.8V; requires local 1.0µF ceramic capacitor placed adjacent to pin for stability. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers fixed 2.8V; independent of VOUT1; supports separate load decoupling. |
| EN2 (Pin 5) | Channel 2 enable input | Active-high logic; drives high (>1.3V) to enable 2.8V rail; must not float-tie to VIN2 or GND if unused. |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7–5.25V; may be shared with VIN1 or independently sourced for isolation. |
| VIN1 (Pin 7) | Channel 1 input supply | Accepts 1.7–5.25V; independent routing recommended to minimize coupling into 1.8V rail. |
| EN1 (Pin 8) | Channel 1 enable input | Active-high logic; controls 1.8V rail independently; supports dynamic power gating of baseband logic. |
| Thermal Pad | Thermal dissipation node | Not electrically functional as GND; connect to large copper area tied to system GND for thermal relief (PD max = 600mW). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables split-rail power delivery (1.8V + 2.8V) without inter-channel interference or layout coupling. |
| Auto-discharge function | Internal 50Ω NMOS discharges VOUT1/VOUT2 when EN1/EN2 are low, preventing residual voltage hold-up in powered-down states. |
| Ultra-low output noise | 60µVrms enables clean power for image sensors and RF front-end ICs without additional filtering. |
| High PSRR at 1kHz | 75dB rejection minimizes ripple from noisy switchers-critical for maintaining SNR in analog signal chains. |
| Low quiescent current | 100µA typical with both channels active supports >1-year battery life in IoT endpoint sleep modes. |
Applications
| Smartphone Baseband Power | RF Transceiver Bias |
|---|---|
Use Scenario: Supplying application processor I/O and memory interface rails in space-constrained smartphone mainboard. IC Role / Device Role / Timing Role: Dual LDO provides isolated 1.8V (I/O) and 2.8V (memory) with independent enable control for power-state sequencing. Use Value: Eliminates need for two discrete regulators, reducing BOM count and PCB area while maintaining tight voltage accuracy across temperature. |
Use Scenario: Powering LTE/Wi-Fi RF transceivers requiring ultra-low-noise 2.8V supply and clean 1.8V digital core voltage. IC Role / Device Role / Timing Role: Delivers low-noise 2.8V for PA bias and 1.8V for transceiver logic, with PSRR suppressing DC/DC switching artifacts. Use Value: 60µVrms noise and 75dB PSRR directly improve EVM and receiver sensitivity without external ferrite beads or LC filters. |
| Camera Module Power | Portable Media Player Audio |
Use Scenario: Providing regulated power to CMOS image sensor (1.8V analog/digital) and ISP (2.8V core) in compact camera modules. IC Role / Device Role / Timing Role: Dual-output LDO supplies sensor analog rail and ISP processing voltage with independent enable for power-down during idle. Use Value: Auto-discharge ensures rapid VOUT decay after shutdown, preventing sensor latch-up or ISP state corruption during mode transitions. |
Use Scenario: Powering DAC, headphone amplifier, and DSP in battery-powered media players requiring long runtime and low THD+N. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 2.8V to analog audio stages and 1.8V to digital logic, minimizing supply-induced distortion. Use Value: 60µVrms output noise directly translates to >100dB SNR in audio path, meeting Hi-Res Audio certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7345D-1828RH4-7 | Successor device; identical pinout, same 1.8V/2.8V outputs, improved PSRR (78dB @ 1kHz), lower dropout (0.24V @ 300mA). | Direct drop-in replacement with enhanced thermal performance and tighter load regulation (±15mV vs. ±30mV). | Select for new designs requiring extended lifetime support and higher reliability margin. |
| TPL7407LDR | Single-channel 300mA LDO (not dual); 1.8V fixed output only; no 2.8V rail; 65dB PSRR; 30µVrms noise. | Requires two devices to replicate dual-rail function; increases board area and BOM cost. | Consider only if 2.8V rail is supplied separately and ultra-low noise (30µVrms) is prioritized over integration. |
Compared with AP7344D-1828RH4-7, the AP7345D offers measurable improvements in PSRR and dropout for next-gen portable designs, while the TPL7407LDR trades integration for marginally lower noise-making it viable only when dual-rail consolidation is not required.
Availability
AP7344D-1828RH4-7 is available at Aetrix Electronics and suitable for smartphone baseband power, RF transceiver bias, camera module supply, and portable media player audio requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for AP7344D-1828RH4-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for consumer, industrial, and automotive markets, with manufacturing certified to IATF 16949.
The AP7344 series belongs to Diodes' high-PSRR, low-noise LDO portfolio designed specifically for battery-powered portable electronics demanding dual-rail precision regulation and minimal board space.
FAQ
Is the AP7344D-1828RH4-7 pin-compatible with the AP7345D-1828RH4-7?
Yes-the AP7344D-1828RH4-7 and AP7345D-1828RH4-7 share identical X2-DFN1612-8 packaging, pin assignment, and footprint. Both support the same 1.8V/2.8V output configuration and enable logic thresholds, allowing direct PCB-level substitution without layout changes.
What is the purpose of the 'D' in the part number AP7344D-1828RH4-7?
The 'D' suffix indicates the device includes integrated auto-discharge circuitry on both output channels. When EN1 or EN2 is pulled low, a 50Ω internal NMOS transistor actively discharges the corresponding VOUT pin to GND, eliminating residual voltage that could cause latch-up or improper reset sequencing in downstream ICs.
Can AP7344D-1828RH4-7 operate with only one channel enabled?
Yes-EN1 and EN2 are fully independent. Either channel can be enabled or disabled without affecting the other. Quiescent current drops to 50–70µA when only one channel is active and the other is disabled, optimizing power in partial-operation modes such as standby audio playback or sensor polling.
What is the maximum allowable input voltage for reliable operation?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits, especially under high ambient temperature or full load, and may trigger thermal shutdown or degrade long-term reliability.
AP7344D-1828RH4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.8V, 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.39V @ 300mA, 0.3V @ 300mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 140 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1612-8
AP7344D-1828RH4-7 FAQ
1.How can I place an order for AP7344D-1828RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7344D-1828RH4-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP7344D-1828RH4-7 reliable?
The price and inventory of AP7344D-1828RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7344D-1828RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7344D-1828RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7344D-1828RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7344D-1828RH4-7?
AP7344D-1828RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7344D-1828RH4-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP7344D-1828RH4-7?
For technical support, including AP7344D-1828RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7344D-1828RH4-7 requirements.
6.How does Aetrix verify that AP7344D-1828RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7344D-1828RH4-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP7344D-1828RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7344D-1828RH4-7?
All AP7344D-1828RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7344D-1828RH4-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP7344D-1828RH4-7 part is unused and in its original packaging.
Return procedure for AP7344D-1828RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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